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Before they were X-Men...Today they are X-Men, protectors of humanity and the vanguard of mutantkind. But before they became heroes, they were just teenagers - frightened of a world that feared and hated them. Adolescence is never easy - but it's even harder when you find yourself with incredible abilities you barely understand, much less control. Take a look back at how some of your favorite mutants fought their way through childhood to become X-Men.